Resonance capacitor device for high-frequency power supply

Abstract

The utility model provides a resonance capacitor device for high frequency power supply, this device designs a set of resonance capacitor component and its mounting structure, has the characteristics that the heat capacity of capacitor is small, stability is high. The resonance capacitor device for high frequency power supply includes several resonance capacitors, still includes bottom plate, copper bar and connecting row, the upper and lower two layers of several resonance capacitors are arranged in the form of superposition, and two layers of resonance capacitors are connected through two copper bars, four insulators installed on the bottom plate install two copper bars and resonance capacitor on the bottom plate, the bottom plate is installed on the power backplate of high frequency power supply, two copper bars are first copper bar and second copper bar respectively, first copper bar is connected with power busbar through connecting row, and second copper bar is connected with power through braided copper band, connecting row adopts three folding plate structure, and the folding plate of both sides is connected with first copper bar and power busbar respectively, and the middle part of the folding plate connected with first copper bar is equipped with the recess that avoids installation interference.

Description

Technical Field

[0001] This utility model relates to a resonant capacitor device for high-frequency power supplies. This device belongs to the field of high-frequency power supply technology and is mainly used in the high-frequency power supply of electrostatic precipitators. Background Technology

[0002] Resonant capacitor technology is an important technology in the field of power electronics, playing a key role in high-frequency power supplies. The resonant capacitor is the core component of the resonant converter, forming a resonant circuit with components such as inductors and transformers to achieve efficient energy conversion. In high-power applications, the resonant capacitor needs to withstand high current and high temperature, so the heat dissipation problem needs to be solved.

[0003] A resonant capacitor and an inductor form an LC resonant circuit. By adjusting the values ​​of capacitance and inductance, the circuit can resonate at a specific frequency. At this point, the circuit strongly amplifies and selects signals of that specific frequency, filtering out interference signals of other frequencies. In an oscillating circuit, the resonant capacitor, in conjunction with inductors, crystals, and other components, generates stable high-frequency or low-frequency oscillation signals. The resonant capacitor stores and releases electrical energy during resonance, and its energy exchange with the inductor maintains the circuit's oscillation. In high-power power supply circuits, the resonant capacitor participates in the energy conversion process, helping to improve the power supply's efficiency and stability, and achieving DC-DC voltage conversion. The resonant capacitor can adjust the circuit's input and output impedance, ensuring that the signal is absorbed by the circuit to the maximum extent during transmission, reducing reflection and loss. Simultaneously, it can stabilize the circuit's operating state, suppress frequency drift caused by power fluctuations or load changes, and ensure reliable circuit operation.

[0004] In current technology, the resonant circuit of the high-frequency power supply for electrostatic precipitators generally uses multiple large-capacity resonant capacitors connected in parallel. Large-capacity resonant capacitors have the problem of generating a lot of heat individually and not dissipating it easily, which leads to temperature rise. This can cause the circuit to burn out and cause power supply failure, so it is necessary to improve it. Summary of the Invention

[0005] To address the shortcomings of existing technologies, this utility model provides a resonant capacitor device for high-frequency power supplies. This device is designed with a resonant capacitor assembly and its mounting structure, and features low capacitor heat generation and high stability.

[0006] The specific technical solution of this utility model is as follows: A resonant capacitor device for a high-frequency power supply includes several resonant capacitors, a base plate, copper busbars, and connecting busbars. The several resonant capacitors are stacked in two layers, and the two layers of resonant capacitors are connected by two sets of copper busbars. Four insulators mounted on the base plate mount the two sets of copper busbars and the resonant capacitors on the base plate. The base plate is mounted on the power supply backplane of the high-frequency power supply.

[0007] Furthermore, the overall size of the two-layer resonant capacitor is comparable to the size of the base plate.

[0008] Furthermore, the two sets of copper busbars are respectively the first copper busbar and the second copper busbar. Furthermore, of the two sets of copper busbars, the first copper busbar is connected to the power busbar via a connecting busbar, and the second copper busbar is connected to the power supply via a braided copper strip.

[0009] Furthermore, the connecting bar adopts a three-fold plate structure, with the fold plates on both sides connected to the first copper busbar and the power busbar respectively, and the fold plate connected to the first copper busbar has a groove in the middle to avoid installation interference.

[0010] Furthermore, the connecting bar is fixed to the first copper busbar with a flat washer, a spring washer, and a nut, and then the connecting bar is fixed to the power supply busbar with two bolts, a flat washer, a spring washer, and a nut.

[0011] Furthermore, the two-layer resonant capacitors are mounted on two sets of copper busbars using bolts, flat washers, spring washers, and nuts.

[0012] Furthermore, the base plate is fixed to the power supply backplate using screws, flat washers, and spring washers.

[0013] Furthermore, the braided copper strip of the power supply is fixed to the second copper busbar using bolts, flat washers, spring washers, and nuts.

[0014] Compared with the prior art, this utility model has the following advantages: This utility model discloses a resonant capacitor device for high-frequency power supplies. It replaces the existing large-size resonant capacitor structure with multiple resonant capacitors distributed in two layers, and sets up copper busbars to realize capacitor installation. This device has the characteristics of compact structure and space saving, convenient installation, and is suitable for the transformation of existing high-frequency power supplies.

[0015] This invention fixes two copper busbars to the base plate using insulators, and then fixes the base plate to the power supply backplate, thus solving the problem that the power supply backplate is not long enough to install it.

[0016] This utility model features a groove in the middle of the connecting strip to avoid interference with the installation of the resonant capacitor, while also making full use of space. This integrated design facilitates installation and on-site maintenance.

[0017] This invention uses a small-sized resonant capacitor. The miniaturization of the capacitor reduces heat generation and improves heat dissipation, thus avoiding power failures and high failure rates caused by poor heat dissipation. It can provide a stable high-voltage output for the electrostatic precipitator, ensure the stable operation of the electric field, and improve the dust removal effect. Attached Figure Description

[0018] Figure 1This is a schematic diagram of the structure of the resonant capacitor device for the high-frequency power supply in the embodiment; Figure 2 This is a top view of the resonant capacitor device for the high-frequency power supply in the embodiment; Figure 3 for Figure 2 Side view; Figure 4 This is a schematic diagram showing the installation of the high-frequency power supply resonant capacitor device and the power supply in the embodiment. Figure 5 for Figure 4 Side view; Figure 6 This is a schematic diagram of the connecting row structure in the embodiment; In the diagram, 1-resonant capacitor; 2-base plate; 3-first copper busbar; 4-second copper busbar; 5-insulator; 6-connecting busbar; 61-groove; 7-power backplate; 8-power busbar; 9-braided copper strip. Detailed Implementation Example 1:

[0019] like Figure 1 , Figure 2 , Figure 3 As shown, this example provides a resonant capacitor device for a high-frequency power supply, including several resonant capacitors 1, a base plate 2, copper busbars, and connecting busbars 6. The resonant capacitors are stacked in two layers, connected by two sets of copper busbars. Four insulators 5 mounted on the base plate 2 mount the two sets of copper busbars and the resonant capacitors 1 onto the base plate 2. The base plate 2 is mounted on the power supply backplate 7 of the high-frequency power supply. The two sets of copper busbars are a first copper busbar 3 and a second copper busbar 4. The first copper busbar 3 is connected to the power supply busbar 8 via the connecting busbar 6, and the braided copper strip 9 of the power supply is connected to the second copper busbar 4. Compared to existing resonant capacitor technologies, this example uses small-sized capacitors and stacks multiple resonant capacitors in two layers, achieving installation with the power supply through structures such as insulators 5, copper busbars, the base plate 2, and the connecting busbar 6. Example 2:

[0020] like Figure 2 As shown, a further optional design in this example is that the overall size of the resonant capacitor 1 arranged in two layers is comparable to the size of the base plate 2. Because small-sized resonant capacitors are used, and the resonant capacitors are in the form of component modules, an extended base plate 2 is designed to install the overall resonant capacitor component module, which solves the problem that the back plate of the original power supply is not long enough and multiple small-sized resonant capacitors cannot be installed when the power supply is modified. Example 3:

[0021] like Figure 6As shown, a further optional design in this example is that the connecting plate 6 adopts a three-fold plate structure. The fold plates on both sides of the connecting plate are connected to the first copper busbar 3 and the power busbar 8, respectively. The fold plate connected to the first copper busbar 3 also has a groove 61 in the middle to avoid installation interference. This connecting plate design with groove 61 avoids interference during the installation of resonant capacitors and makes full use of space. Example 4:

[0022] like Figure 4 , Figure 5 As shown, a further optional design of this example is that, in the high-frequency power supply resonant capacitor device of this utility model, the connecting bar 6 is fixed to the first copper busbar 3 by two flat washers, spring washers, and nuts, and then the connecting bar is fixed to the power busbar 8 by two bolts, flat washers, spring washers, and nuts.

[0023] The two-layer resonant capacitor 1 is mounted on two sets of copper busbars using bolts, flat washers, spring washers, and nuts. The base plate 2 is fixed to the power supply backplate 7 using four screws, flat washers, and spring washers. The braided copper strip 9 of the power supply is fixed to the second copper busbar 4 using bolts, flat washers, spring washers, and nuts. Example 5:

[0024] like Figure 1 , Figure 2 As shown, a further optional design in this example is that the high-frequency power supply resonant capacitor device has a total of 22 resonant capacitors in two layers, with 11 capacitors per row. The two layers of resonant capacitors are mounted on two copper busbars and then on the base plate 2 via four insulators. The 22 resonant capacitors can be connected in parallel, and the total capacitance after parallel connection is equal to the sum of the individual capacitor values, which is the same as the total capacitance value before the improvement. Compared with the existing structure that only uses a few large-size resonant capacitors, this utility model miniaturizes the resonant capacitors, resulting in less heat generation and avoiding power supply failures caused by high temperatures.

Claims

1. A resonant capacitor device for a high-frequency power supply, comprising a plurality of resonant capacitors, characterized in that, It also includes a base plate, copper busbars and connecting busbars, and several resonant capacitors are stacked in two layers, and the two layers of resonant capacitors are connected by two sets of copper busbars. Four insulators installed on the base plate install the two sets of copper busbars and resonant capacitors on the base plate. The base plate is installed on the power backplane of the high-frequency power supply.

2. The resonant capacitor device for high-frequency power supplies according to claim 1, characterized in that, The overall size of the two-layer resonant capacitor is comparable to the size of the base plate.

3. The resonant capacitor device for high-frequency power supplies according to claim 1, characterized in that, The two sets of copper busbars are the first copper busbar and the second copper busbar, respectively.

4. The resonant capacitor device for high-frequency power supplies according to claim 3, characterized in that, The first copper busbar is connected to the power busbar via a connecting busbar, and the second copper busbar is connected to the power supply via a braided copper strip.

5. The resonant capacitor device for high-frequency power supplies according to claim 4, characterized in that, The connecting bar adopts a three-fold plate structure. The fold plates on both sides are connected to the first copper busbar and the power busbar respectively. The middle part of the fold plate connected to the first copper busbar is provided with a groove to avoid installation interference.

6. The resonant capacitor device for high-frequency power supplies according to claim 5, characterized in that, The connecting busbar is fixed to the first copper busbar with two flat washers, spring washers, and nuts, and then fixed to the power supply busbar with bolts, flat washers, spring washers, and nuts.

7. The resonant capacitor device for high-frequency power supplies according to claim 5, characterized in that, The two-layer resonant capacitors are mounted on two sets of copper busbars using bolts, flat washers, spring washers, and nuts.

8. The resonant capacitor device for high-frequency power supplies according to claim 5, characterized in that, The base plate is fixed to the power supply backplate using screws, flat washers, and spring washers.

9. The resonant capacitor device for high-frequency power supplies according to claim 5, characterized in that, The braided copper strip of the power supply is fixed to the second copper busbar using bolts, flat washers, spring washers, and nuts.

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